16-year-old James Allington moves with his parents to the supposedly quiet small town of Greenfield in Massachusetts/USA. As soon as he arrives, the teenager witnesses a crime and is gradually drawn into a swamp of mysterious things. James finds out that he lives among vampires and werewolves. His new friends Riley, Kieran and Cassie also have dark secrets. The teens must trust each other to banish an ancient curse or Riley will die. An unequal battle begins against a powerful opponent and against time.